Frost Dates for Trail Valley, NT

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. June 11
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. August 17
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost June 16
First Fall Frost August 8

Hard Freeze (−2°C)

Last Spring Hard Freeze June 3
First Fall Hard Freeze September 7
68.75°N, -133.50°W © OpenStreetMap

Growing Season

67 Days June 11 to August 17

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 2b

Avg. annual minimum: −45 to −40°F (−43 to −40°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

-30° -15° 0° 15°
-24°
High: -21°C
Avg: -24°C
Low: -28°C
Jan
-23°
High: -19°C
Avg: -23°C
Low: -27°C
Feb
-23°
High: -18°C
Avg: -23°C
Low: -27°C
Mar
-13°
High: -8°C
Avg: -13°C
Low: -18°C
Apr
-1°
High: 4°C
Avg: -1°C
Low: -5°C
May
9°
High: 15°C
Avg: 9°C
Low: 3°C
Jun
13°
High: 18°C
Avg: 13°C
Low: 7°C
Jul
10°
High: 14°C
Avg: 10°C
Low: 5°C
Aug
4°
High: 7°C
Avg: 4°C
Low: 0°C
Sep
-6°
High: -3°C
Avg: -6°C
Low: -9°C
Oct
-17°
High: -14°C
Avg: -17°C
Low: -21°C
Nov
-23°
High: -20°C
Avg: -23°C
Low: -27°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm
0 mm
0.0 mm
Jan
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
0 mm
0.0 mm
Apr
3 mm
2.5 mm
May
15 mm
15.2 mm
Jun
28 mm
27.9 mm
Jul
46 mm
45.7 mm
Aug
23 mm
22.9 mm
Sep
0 mm
0.0 mm
Oct
0 mm
0.0 mm
Nov
0 mm
0.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec0h7h11h15.5h20h24h24h17h13h8.5h3.5h0h
Jan: 0h (Polar Night)
Feb: 8:30 AM – 3:30 PM · 7h 01m
Mar: 6:29 AM – 5:31 PM · 11h 02m
Apr: 4:19 AM – 7:41 PM · 15h 22m
May: 1:56 AM – 10:04 PM · 20h 08m
Jun: 24h (Midnight Sun)
Jul: 24h (Midnight Sun)
Aug: 3:24 AM – 8:36 PM · 17h 13m
Sep: 5:37 AM – 6:23 PM · 12h 46m
Oct: 7:43 AM – 4:17 PM · 8h 34m
Nov: 10:13 AM – 1:47 PM · 3h 34m
Dec: 0h (Polar Night)
Daylight Longest: 24h 00m · Shortest: 0h 00m

Nearby Stations

Inuvik A, NTJune 9 - August 20 Tuktoyaktuk, NT June 17 - September 3

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